core::arch::x86

Function _mm256_undefined_pd

1.27.0 · Source
pub unsafe fn _mm256_undefined_pd() -> __m256d
Available on (x86 or x86-64) and target feature avx and x86 only.
Expand description

Returns vector of type __m256d with indeterminate elements. Despite being “undefined”, this is some valid value and not equivalent to mem::MaybeUninit. In practice, this is equivalent to mem::zeroed.

Intel’s documentation